OEM 2005 Scion xB Knock Sensor

2005 Scion xB Parts Questions & Experts Answers

• Q: How to replace the Knock Sensor on 2005 Scion xB?

  A: Engine replacement requires draining engine coolant after which technicians should disconnect the air cleaner assembly followed by separate sutural work on the accelerator control cable assembly. The first step involves removing the transmission oil level gage sub-assembly and the transmission oil filler tube sub-assembly from the A/T transaxle, then disconnecting the ISC valve connector and throttle position sensor connector (for M/T transaxle), removing the wire harness clamp, taking out the accelerator control cable bracket, and throttle body assembly by removing the bolt and 2 nuts. The repair begins by removing the intake manifold gasket followed by disconnection of the cylinder head cover No.2 through the removal of its 4 nuts. The installation process begins with the disconnect of the radiator hose inlet and removal of the oil level gage sub-assembly. The intake manifold can then be removed by disconnecting the ventilation hose and the union to connector tube hose and three wire harness clamps before using the specified sequence to loose the three bolts and two nuts and remove the gasket. The knock sensor removal requires disconnecting its connector and using Special Service Tool: 09816-30010. The installation process requires the usage of the same tool to mount the knock sensor which demands a torque of 44 N.m (450 kgf.cm, 32 ft.lbf) and reestablishes the knock sensor connector. Attach a replacement gasket to the intake manifold before installing it with 3 bolts and 2 nuts which should be tightened evenly to 30 N.m (306 kgf.cm, 22 ft.lbf) torque. Next, secure the 3 wire harness clamps, reconnect the union to connector tube hose and the ventilation hose. Reassemble the oil level gage sub-assembly followed by connecting the radiator hose inlet before installing the cylinder head cover No.2 while securing nut A first then tightening nut B to 7.0 Nm (71 kgf.cm, 62 in.lbf). The throttle body assembly requires installation with a new gasket before bolt and two nut fastening to reach a torque of 30 N.m (306 kgf.cm, 22 ft.lbf). Afterward, install the wire harness clamp followed by reconnecting the throttle position sensor connector (for M/T transaxle) and the ISC valve connector. The repair process ends with transmission oil filler tube sub-assembly and transmission oil level gage sub-assembly replacement for A/T transaxle followed by accelerator control cable assembly then air cleaner assembly then engine coolant addition before checking for any engine coolant leakage.